Improvement in horseshoes



@tutti @Mira ALBERT L, MURPHY, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 100,180, dated February 22, 1870.

IMPROVEMENT IN HORSESHOES.

TheSchedule referred to in these Letters Patent and making part of thesame.

I, ALBERT L. MURPHY, of Philadelphia, county of Philadelphia, State ofPennsylvania, have invented an Improvement in Detachable Calks for'Horseshoes, of which the following is a speciiication.

Nature and Object of my Invention.

My invention consists principally in forming the calks of a horseshoeupon a forked metal bar or frame, which can be readily attached to ordetached from the shoe without involving the necessity of removing thelatter from the horses hoof; and v My invention also consists in a.peculiar method, fully described hereafter, of rigidly attaching thesaid bar or frame to the shoe.

Description of the Accompanying Drawing.

Figure 1 is a perspective view of a horseshoe with my improvement;

Figure 2, a sectional view of a portion of the same; and

Figure' 3, a perspective view of the calks and frame det-ached from theshoe.

General Description.v

formed at their extremities into heel-calks F F beneath, and into hooksor lips e e above, these latter Vpassing around and partly embracing theends of the shoe, as best observed in Iig. 1.

The toe-calli F is formed transversely upon and projects downward fromthe front end of the bar B, and directly. above this calk, and alsoforming part of the said bar, is a thin plate, 7L, several inches wide,which before being shaped to the hoof, as hereafter described,

extends vertically upward, as indicated by the full lines in fig. 3.

The forked ends or arms d and d' of the bar B are sufficiently elasticto admit of being drawn toward each other to a slight extent by means ofa square-headed bolt or screw,G, which extends through 'both of the saidarms, as plainly shown in the drawing.

The method of attaching the calks with their connecting frame to theshoe and horses hoof is' as follows:

The bolt G is first loosened by the aid of a suitable wrench, so as topermit the arms d and d to spring freely apart, the bar being thentit-ted to or held against the under side of the shoe, and the arms dand d forced still further apart by a pry or other instrument untiltheir hooked ends or lips e e can be caused -to pass partly around andembrace the ends of the shoe, as shownin g. 1.

'lhe bolt G is next tightened so as to draw the hooked arms or clampsrmly against'the opposite sides of the shoe, after which the plate h,which forms the fastening in front, is hammered down and rounded so asto adapt it to the exact ouwe ofthe front of the shoe and of the hoof ofthe same, (see dotted lines, ii 3.

Ag'lhg calks, when thus attached to theshoe, are as rigid and immovableas though forming part of the same, but they can, by lmerely looseningthe screw G, be quickiy detached and replaced by another setafterbecoming worn, or when, owir g to changes of weather and in thecondition of the roads, it becomes necessary to employ calks ofditfereut lengths and degrees of sharpness.

Ordinarily the calks cannot be changed without removing aud replacingthe entire shoe, an operation which is attended with more or less risk,which destroys the hoof when frequently repeated, and is a' frequentcause of lameness vin `horses.

'All of these objections are ei'ectually overcome by my invention, whichhas afurther advantage, namely, thaty the bar or frame B, extendingacross the shoe beneath the hoof, will ei'ectually prevent the cloggingor hailing of the iatter when traveling over snowy roads. l

rlhe ealks also can be temporarily removed at night from the shoes ofhorses which have a habit of lying down in their stalls, and whichconsequently incur a risk of injury by the calks.

Claims.

nected permanently together at their inner ends, of a tightening-screw,G. v

4. The plate h, atthefront end ofthe bar or frame B, and connected atits center to the frame, but free at the ends, so that the latter may bebent inward, for

the purpose described. l

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT L. MURPHY.

Witnesses JOHN WHITE, HARRY Surfer.

